3.21.84 \(\int \frac {x^3 \sqrt {x+x^2}}{\sqrt {x^2+x \sqrt {x+x^2}}} \, dx\)

Optimal. Leaf size=150 \[ \frac {\sqrt {x^2+x} \sqrt {x \left (\sqrt {x^2+x}+x\right )} \left (-1146880 x^4-168960 x^3+201344 x^2-264264 x+495495\right )}{5160960 x}+\sqrt {x \left (\sqrt {x^2+x}+x\right )} \left (\frac {1146880 x^4+1387520 x^3-18304 x^2+37752 x-165165}{5160960}-\frac {1573 \sqrt {\sqrt {x^2+x}-x} \tanh ^{-1}\left (\sqrt {2} \sqrt {\sqrt {x^2+x}-x}\right )}{16384 \sqrt {2} x}\right ) \]

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Rubi [F]  time = 1.76, antiderivative size = 0, normalized size of antiderivative = 0.00, number of steps used = 0, number of rules used = 0, integrand size = 0, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.000, Rules used = {} \begin {gather*} \int \frac {x^3 \sqrt {x+x^2}}{\sqrt {x^2+x \sqrt {x+x^2}}} \, dx \end {gather*}

Verification is not applicable to the result.

[In]

Int[(x^3*Sqrt[x + x^2])/Sqrt[x^2 + x*Sqrt[x + x^2]],x]

[Out]

(2*Sqrt[x + x^2]*Defer[Subst][Defer[Int][(x^8*Sqrt[1 + x^2])/Sqrt[x^4 + x^2*Sqrt[x^2 + x^4]], x], x, Sqrt[x]])
/(Sqrt[x]*Sqrt[1 + x])

Rubi steps

\begin {align*} \int \frac {x^3 \sqrt {x+x^2}}{\sqrt {x^2+x \sqrt {x+x^2}}} \, dx &=\frac {\sqrt {x+x^2} \int \frac {x^{7/2} \sqrt {1+x}}{\sqrt {x^2+x \sqrt {x+x^2}}} \, dx}{\sqrt {x} \sqrt {1+x}}\\ &=\frac {\left (2 \sqrt {x+x^2}\right ) \operatorname {Subst}\left (\int \frac {x^8 \sqrt {1+x^2}}{\sqrt {x^4+x^2 \sqrt {x^2+x^4}}} \, dx,x,\sqrt {x}\right )}{\sqrt {x} \sqrt {1+x}}\\ \end {align*}

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Mathematica [C]  time = 0.57, size = 156, normalized size = 1.04 \begin {gather*} \frac {\left (x+\sqrt {x (x+1)}\right )^4 \sqrt {x \left (x+\sqrt {x (x+1)}\right )} \left (x+\sqrt {x (x+1)}+1\right ) \left (11 \, _2F_1\left (-\frac {9}{2},3;-\frac {7}{2};1+\frac {1}{2 \left (x+\sqrt {x (x+1)}\right )}\right )+72 x \left (32 x^3+4 \left (8 \sqrt {x (x+1)}+13\right ) x^2+\left (36 \sqrt {x (x+1)}+19\right ) x+5 \sqrt {x (x+1)}\right )\right )}{1152 \sqrt {x (x+1)} \left (2 x+2 \sqrt {x (x+1)}+1\right )^5} \end {gather*}

Antiderivative was successfully verified.

[In]

Integrate[(x^3*Sqrt[x + x^2])/Sqrt[x^2 + x*Sqrt[x + x^2]],x]

[Out]

((x + Sqrt[x*(1 + x)])^4*Sqrt[x*(x + Sqrt[x*(1 + x)])]*(1 + x + Sqrt[x*(1 + x)])*(72*x*(32*x^3 + 5*Sqrt[x*(1 +
x)] + 4*x^2*(13 + 8*Sqrt[x*(1 + x)]) + x*(19 + 36*Sqrt[x*(1 + x)])) + 11*Hypergeometric2F1[-9/2, 3, -7/2, 1 +
1/(2*(x + Sqrt[x*(1 + x)]))]))/(1152*Sqrt[x*(1 + x)]*(1 + 2*x + 2*Sqrt[x*(1 + x)])^5)

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IntegrateAlgebraic [A]  time = 5.23, size = 150, normalized size = 1.00 \begin {gather*} \frac {\sqrt {x+x^2} \left (495495-264264 x+201344 x^2-168960 x^3-1146880 x^4\right ) \sqrt {x \left (x+\sqrt {x+x^2}\right )}}{5160960 x}+\sqrt {x \left (x+\sqrt {x+x^2}\right )} \left (\frac {-165165+37752 x-18304 x^2+1387520 x^3+1146880 x^4}{5160960}-\frac {1573 \sqrt {-x+\sqrt {x+x^2}} \tanh ^{-1}\left (\sqrt {2} \sqrt {-x+\sqrt {x+x^2}}\right )}{16384 \sqrt {2} x}\right ) \end {gather*}

Antiderivative was successfully verified.

[In]

IntegrateAlgebraic[(x^3*Sqrt[x + x^2])/Sqrt[x^2 + x*Sqrt[x + x^2]],x]

[Out]

(Sqrt[x + x^2]*(495495 - 264264*x + 201344*x^2 - 168960*x^3 - 1146880*x^4)*Sqrt[x*(x + Sqrt[x + x^2])])/(51609
60*x) + Sqrt[x*(x + Sqrt[x + x^2])]*((-165165 + 37752*x - 18304*x^2 + 1387520*x^3 + 1146880*x^4)/5160960 - (15
73*Sqrt[-x + Sqrt[x + x^2]]*ArcTanh[Sqrt[2]*Sqrt[-x + Sqrt[x + x^2]]])/(16384*Sqrt[2]*x))

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fricas [A]  time = 0.78, size = 138, normalized size = 0.92 \begin {gather*} \frac {495495 \, \sqrt {2} x \log \left (\frac {4 \, x^{2} - 2 \, \sqrt {x^{2} + \sqrt {x^{2} + x} x} {\left (\sqrt {2} x + \sqrt {2} \sqrt {x^{2} + x}\right )} + 4 \, \sqrt {x^{2} + x} x + x}{x}\right ) + 4 \, {\left (1146880 \, x^{5} + 1387520 \, x^{4} - 18304 \, x^{3} + 37752 \, x^{2} - {\left (1146880 \, x^{4} + 168960 \, x^{3} - 201344 \, x^{2} + 264264 \, x - 495495\right )} \sqrt {x^{2} + x} - 165165 \, x\right )} \sqrt {x^{2} + \sqrt {x^{2} + x} x}}{20643840 \, x} \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(x^3*(x^2+x)^(1/2)/(x^2+x*(x^2+x)^(1/2))^(1/2),x, algorithm="fricas")

[Out]

1/20643840*(495495*sqrt(2)*x*log((4*x^2 - 2*sqrt(x^2 + sqrt(x^2 + x)*x)*(sqrt(2)*x + sqrt(2)*sqrt(x^2 + x)) +
4*sqrt(x^2 + x)*x + x)/x) + 4*(1146880*x^5 + 1387520*x^4 - 18304*x^3 + 37752*x^2 - (1146880*x^4 + 168960*x^3 -
201344*x^2 + 264264*x - 495495)*sqrt(x^2 + x) - 165165*x)*sqrt(x^2 + sqrt(x^2 + x)*x))/x

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giac [F]  time = 0.00, size = 0, normalized size = 0.00 \begin {gather*} \int \frac {\sqrt {x^{2} + x} x^{3}}{\sqrt {x^{2} + \sqrt {x^{2} + x} x}}\,{d x} \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(x^3*(x^2+x)^(1/2)/(x^2+x*(x^2+x)^(1/2))^(1/2),x, algorithm="giac")

[Out]

integrate(sqrt(x^2 + x)*x^3/sqrt(x^2 + sqrt(x^2 + x)*x), x)

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maple [F]  time = 0.03, size = 0, normalized size = 0.00 \[\int \frac {x^{3} \sqrt {x^{2}+x}}{\sqrt {x^{2}+x \sqrt {x^{2}+x}}}\, dx\]

Verification of antiderivative is not currently implemented for this CAS.

[In]

int(x^3*(x^2+x)^(1/2)/(x^2+x*(x^2+x)^(1/2))^(1/2),x)

[Out]

int(x^3*(x^2+x)^(1/2)/(x^2+x*(x^2+x)^(1/2))^(1/2),x)

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maxima [F]  time = 0.00, size = 0, normalized size = 0.00 \begin {gather*} \int \frac {\sqrt {x^{2} + x} x^{3}}{\sqrt {x^{2} + \sqrt {x^{2} + x} x}}\,{d x} \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(x^3*(x^2+x)^(1/2)/(x^2+x*(x^2+x)^(1/2))^(1/2),x, algorithm="maxima")

[Out]

integrate(sqrt(x^2 + x)*x^3/sqrt(x^2 + sqrt(x^2 + x)*x), x)

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mupad [F]  time = 0.00, size = -1, normalized size = -0.01 \begin {gather*} \int \frac {x^3\,\sqrt {x^2+x}}{\sqrt {x^2+x\,\sqrt {x^2+x}}} \,d x \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

int((x^3*(x + x^2)^(1/2))/(x^2 + x*(x + x^2)^(1/2))^(1/2),x)

[Out]

int((x^3*(x + x^2)^(1/2))/(x^2 + x*(x + x^2)^(1/2))^(1/2), x)

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sympy [F]  time = 0.00, size = 0, normalized size = 0.00 \begin {gather*} \int \frac {x^{3} \sqrt {x \left (x + 1\right )}}{\sqrt {x \left (x + \sqrt {x^{2} + x}\right )}}\, dx \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(x**3*(x**2+x)**(1/2)/(x**2+x*(x**2+x)**(1/2))**(1/2),x)

[Out]

Integral(x**3*sqrt(x*(x + 1))/sqrt(x*(x + sqrt(x**2 + x))), x)

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